DATAREDIS-1027 - Dispose reactive LettuceConnectionProvider on connection factory shutdown.

LettuceConnectionFactory.destroy() now disposes also the reactive LettuceConnectionProvider to free resources of a connection pool.

Original Pull Request: #470

src/test/java/org/springframework/data/redis/connection/lettuce/LettuceConnectionFactoryUnitTests.java

@@ -48,6 +48,7 @@ import org.junit.Test;
 import org.mockito.ArgumentMatchers;
 
 import org.springframework.beans.DirectFieldAccessor;
+import org.springframework.beans.factory.DisposableBean;
 import org.springframework.data.redis.ConnectionFactoryTracker;
 import org.springframework.data.redis.connection.RedisClusterConfiguration;
 import org.springframework.data.redis.connection.RedisClusterConnection;
@@ -805,6 +806,25 @@ public class LettuceConnectionFactoryUnitTests {
 		verify(connectionProviderMock, times(2)).getConnection(StatefulConnection.class);
 	}
 
+	@Test // DATAREDIS-1027
+	public void shouldDisposeConnectionProviders() throws Exception {
+
+		LettuceConnectionProvider connectionProviderMock = mock(LettuceConnectionProvider.class,
+				withSettings().extraInterfaces(DisposableBean.class));
+		LettuceConnectionFactory connectionFactory = new LettuceConnectionFactory() {
+			@Override
+			protected LettuceConnectionProvider doCreateConnectionProvider(AbstractRedisClient client,
+					RedisCodec<?, ?> codec) {
+				return connectionProviderMock;
+			}
+		};
+
+		connectionFactory.afterPropertiesSet();
+		connectionFactory.destroy();
+
+		verify((DisposableBean) connectionProviderMock, times(2)).destroy();
+	}
+
 	@Test // DATAREDIS-842
 	public void databaseShouldBeSetCorrectlyOnSentinelClient() {